CODEWITHSUNDEEP
carraysstring
SirPL
SirPL

Reputation: 51

Hex value in C string

I need to prepare constant array of ANSI C strings that contains bytes from range of 0x01 to 0x1a. I made custom codepage, so those values represents different characters (i.e. 0x09 represents Š). I'd like to initialise the array in that way:

static const char* brands[] =  {
"Škoda",
  //etc...
};

How can I put 0x09 instead of Š in "Škoda"?

Upvotes: 1

Views: 267

Answers (4)

chux
chux

Reputation: 153650

Recommend not using "\x09koda", use octal or spaced strings.

The problem is that hexadecimal escape sequences are not limited in their length. So if the next char is a hexadecimal character, problems occur. Use octal, which is limited to 3. Or use separated strings. The compiler will concatenate then, but the escape sequence will not accidentally run too far.

// problematic
"\x09Czech"
 ^^^^^--- The escape sequence is \x09C, but \0x09 was hoped for

// recommend octal
"\0111234"
 ^^^^--- The escape sequence is \011

// recommend spaced strings
"\x09" "Czech"

Upvotes: 6

nyxthulhu
nyxthulhu

Reputation: 9752

Have a look at escape squences - i.e \x09

For hex escape you want to use the \Xnnn, for octal just \nnn and for unicode \Unnnn

Upvotes: 1

R Sahu
R Sahu

Reputation: 206637

How can I put 0x09 instead of Š in "Škoda"?

"\x09koda"

Upvotes: 1

Iharob Al Asimi
Iharob Al Asimi

Reputation: 53016

Very simple

"Škoda" -> "\x09koda"

Upvotes: 1

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